[+] Show Closed Private Schools in Windham County, Connecticut

Windham County Private Schools (Closed)

Plainfield Catholic School

Gr: PK-8 | 216 students

Catholic

120 Prospect Street

Moosup, CT 06354

(860) 564-3476

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St. Mary School

Gr: K-9 | 154 students

Catholic

23 Marshall St

Putnam, CT 06260

(860) 928-7046

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Overview

Academics and Faculty:

# Teachers

262 Teachers

7,884 Teachers

Average Student-Teacher Ratio

6:1

8:1

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Student-Teacher Ratio Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	6:1	8:1	11:1
2024	7:1	8:1	11:1
2023	6:1	8:1	11:1
2022	6:1	8:1	11:1
2021	6:1	8:1	11:1
2020	6:1	8:1	12:1
2019	7:1	8:1	12:1
2018	8:1	8:1	12:1
2017	8:1	9:1	12:1
2016	8:1	9:1	12:1
2015	8:1	9:1	12:1

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% Average Faculty w/Advanced Degree

70%

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Percentage of Faculty With Advanced Degrees Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	70%	70%	55%
2024	80%	70%	54%
2023	51%	68%	54%
2022	64%	68%	54%
2021	64%	69%	54%
2020	61%	69%	54%
2019	54%	69%	53%
2018	48%	68%	53%
2017	48%	68%	53%
2016	48%	68%	52%
2015	56%	69%	52%

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Average Class Size

12 students

14 students

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Class Size Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	12	14	15
2024	12	13	15
2023	15	13	15
2022	14	13	15
2021	12	13	15
2020	12	14	15
2019	11	14	15
2018	11	14	15
2017	11	14	15
2016	11	14	15
2015	11	13	15

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Average Number of AP Courses

22 courses

18 courses

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Trends in Average Number of AP Courses Offered
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	21	16	13
2024	11	15	12
2023	14	15	11
2022	14	15	11
2021	14	15	11
2020	13	16	11
2019	13	16	11
2018	13	15	11
2017	11	14	10
2016	9	14	10
2015	16	15	10

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Average SAT score

1190

(Out of 1600)

1254

View Data

SAT Score Trends (2017-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	1190	1247	1233
2024	1190	1254	1230
2023	1190	1244	1228
2022	1190	1242	1229
2021	1190	1240	1229
2020	1190	1239	1226
2019	1190	1241	1226
2018	1190	1257	1226
2017	1190	1266	1233

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Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$31,695

$28,702

View Data

Tuition Cost Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	$32,622	$28,288	$15,012
2024	$35,775	$30,554	$13,254
2023	$34,467	$28,947	$12,626
2022	$33,333	$28,819	$12,187
2021	$33,317	$26,681	$11,800
2020	$32,750	$26,067	$11,512
2019	$22,012	$24,505	$11,293
2018	$24,465	$25,386	$11,017
2017	$24,027	$24,171	$10,708
2016	$31,677	$23,194	$10,356
2015	$25,952	$21,099	$9,939

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Average Summer Program Cost

$5,550

$4,058

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Summer Program Cost Trends (2021-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	$5,550	$4,194	$1,152
2024	$5,550	$4,479	$1,128
2023	$1,100	$3,566	$1,156
2022	$1,000	$3,340	$1,102
2021	$1,000	$3,320	$1,125

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Average % on Financial Aid

45%

37%

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Percent on Financial Aid Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	45%	36%	34%
2024	43%	37%	34%
2023	49%	36%	34%
2022	44%	35%	33%
2021	44%	35%	33%
2020	43%	35%	32%
2019	43%	33%	31%
2018	47%	32%	30%
2017	47%	30%	30%
2016	33%	29%	29%
2015	33%	29%	28%

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Average Financial Aid Grant

$7,875

$17,238

View Data

Financial Aid Grant Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	$750	$17,086	$7,073
2022	$24,710	$17,371	$6,289
2021	$24,710	$16,911	$6,055
2020	$24,710	$16,537	$5,921
2019	$24,710	$16,496	$5,795
2018	$1,200	$16,370	$5,456
2017	$1,200	$15,732	$5,319
2016	$18,500	$14,806	$5,105
2015	$18,500	$13,132	$5,030

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Average Acceptance Rate

85%

71%

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Acceptance Rate Trends (2015-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	85%	71%	81%
2024	75%	70%	85%
2019	99%	69%	85%
2018	97%	69%	85%
2017	97%	70%	85%
2016	82%	69%	85%
2015	82%	69%	85%

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Average Endowment Size

$26 million

$64.96 million

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Endowment Trends (2017-2025)
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	$26 M	$59 M	$39 M
2024	$26 M	$63 M	$39 M
2023	$14 M	$63 M	$39 M
2022	$14 M	$64 M	$40 M
2021	$14 M	$65 M	$40 M
2020	$14 M	$65 M	$40 M
2019	$14 M	$67 M	$40 M
2018	$14 M	$82 M	$43 M
2017	$14 M	$90 M	$45 M

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Students by Ethnicity:

0.54

0.63

View Data

Diversity Score Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	0.48	0.63	0.65
2024	0.53	0.63	0.65
2023	0.67	0.62	0.65
2022	0.66	0.59	0.64
2021	0.64	0.59	0.64
2020	0.63	0.59	0.64
2019	0.56	0.56	0.63
2018	0.57	0.56	0.63
2017	0.59	0.53	0.61
2016	0.59	0.54	0.61
2015	0.58	0.54	0.61

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# American Indian Students

10 Students

716 Students

% American Indian Students

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Percentage of Private School Students of American Indian Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	1%	1%	1%
2024	1%	1%	1%

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# Asian Students

146 Students

2,908 Students

% Asian Students

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Asian Student Percentage Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	10%	5%	5%
2024	9%	5%	5%
2023	11%	5%	5%
2022	10%	5%	4%
2021	8%	5%	4%
2020	9%	5%	4%
2019	8%	5%	4%
2018	7%	5%	4%
2017	8%	4%	4%
2016	8%	4%	4%
2015	7%	4%	4%

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# Hispanic Students

122 Students

5,562 Students

% Hispanic Students

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Hispanic Student Percentage Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	8%	9%	9%
2024	8%	9%	9%
2023	12%	8%	9%
2022	7%	7%	8%
2021	7%	7%	9%
2020	7%	8%	9%
2019	5%	6%	8%
2018	5%	6%	8%
2017	4%	5%	8%
2016	4%	6%	8%
2015	5%	6%	8%

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# Black Students

111 Students

4,891 Students

% Black Students

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Black Student Percentage Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	7%	8%	7%
2024	7%	8%	7%
2023	6%	7%	8%
2022	9%	8%	7%
2021	7%	8%	7%
2020	7%	8%	8%
2019	2%	7%	7%
2018	2%	7%	7%
2017	2%	7%	7%
2016	2%	7%	7%
2015	2%	8%	8%

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# White Students

1,067 Students

34,906 Students

% White Students

66%

56%

View Data

White Student Percentage Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	71%	56%	52%
2024	67%	56%	52%
2023	52%	58%	52%
2022	53%	61%	54%
2021	55%	60%	54%
2020	56%	60%	54%
2019	62%	64%	56%
2018	61%	64%	56%
2017	57%	66%	58%
2016	57%	65%	58%
2015	58%	65%	58%

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# Hawaiian Students

n/a

63 Students

% Hawaiian Students

n/a

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

150 Students

12,827 Students

% of Others Students

21%

View Data

Other Races Student Percentage Trends
Year	Windham County Average	Connecticut (CT) Average	National Average
2025	3%	21%	26%
2024	8%	21%	26%
2023	19%	20%	25%
2022	21%	19%	25%
2021	23%	20%	25%
2020	21%	19%	24%
2019	23%	18%	24%
2018	25%	18%	23%
2017	29%	18%	22%
2016	29%	18%	22%
2015	28%	17%	21%

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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

21 extracurriculars

13 extracurriculars

Average Number of Sports

13 sports

10 sports

Frequently Asked Questions

What are the top ranked private schools in Windham County, CT?

The private schools in Windham County, CT include St. James School, TLC Rolling Ridge, and Marianapolis Preparatory School.

How many private schools are located in Windham County?

12 private schools are located in Windham County.

How diverse are private schools in Windham County?

Windham County private schools are approximately 28% minority students, which is lower than the Connecticut private school average of 31%.

What percentage of students in Windham County go to private school?

9% of all K-12 students in Windham County are educated in private schools (compared to the CT state average of 12%).

What percentage of private schools are religiously affiliated in Windham County?

38% of private schools in Windham County are religiously affiliated (most commonly Catholic and Seventh Day Adventist).

Which private schools in Windham County are often viewed compared to one another?

Popular comparisons of private schools in Windham County include: Marianapolis Preparatory School vs. Pomfret School, St. James School vs. St. Mary St.. Joseph School, Putnam Science Academy vs. Pomfret School

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Year	Windham County Average	Connecticut (CT) Average	National Average
2025	101	165	179
2024	121	161	172
2023	124	163	174
2022	162	168	185
2021	155	166	180
2020	152	163	171
2019	148	167	175
2018	143	165	172
2017	155	175	180
2016	156	172	178
2015	131	167	167

Quick Facts (2026-27)

Quick Facts (2026-27)

Top Ranked Windham County Private Schools (2026-27)

Windham County Private Schools (Closed)

Overview

Trends in Total Number of Private Schools

Trends in the Average Number of Students Per Private School

Percentage of Students of Color Trends (2015-2025)

Academics and Faculty:

Student-Teacher Ratio Trends (2015-2025)

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

Class Size Trends (2015-2025)

Trends in Average Number of AP Courses Offered

SAT Score Trends (2017-2025)

Tuition and Acceptance Rate:

Tuition Cost Trends (2015-2025)

Summer Program Cost Trends (2021-2025)

Percent on Financial Aid Trends (2015-2025)

Financial Aid Grant Trends (2015-2025)

Acceptance Rate Trends (2015-2025)

Endowment Trends (2017-2025)

Students by Ethnicity:

Diversity Score Trends

Percentage of Private School Students of American Indian Trends

Asian Student Percentage Trends

Hispanic Student Percentage Trends

Black Student Percentage Trends

White Student Percentage Trends

Other Races Student Percentage Trends

Extracurriculars and Sports:

Frequently Asked Questions

Recent Articles

Filter Schools

Quick Links

Most Popular Articles

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Best Windham County Private Schools (2026-27)

Top Ranked Windham County Private Schools (2026-27)

Windham County Private Schools (Closed)

Overview

Trends in Total Number of Private Schools

Trends in the Average Number of Students Per Private School

Percentage of Students of Color Trends (2015-2025)

Academics and Faculty:

Student-Teacher Ratio Trends (2015-2025)

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

Class Size Trends (2015-2025)

Trends in Average Number of AP Courses Offered

SAT Score Trends (2017-2025)

Tuition and Acceptance Rate:

Tuition Cost Trends (2015-2025)

Summer Program Cost Trends (2021-2025)

Percent on Financial Aid Trends (2015-2025)

Financial Aid Grant Trends (2015-2025)

Acceptance Rate Trends (2015-2025)

Endowment Trends (2017-2025)

Students by Ethnicity:

Diversity Score Trends

Percentage of Private School Students of American Indian Trends

Asian Student Percentage Trends

Hispanic Student Percentage Trends

Black Student Percentage Trends

White Student Percentage Trends

Other Races Student Percentage Trends

Extracurriculars and Sports:

Frequently Asked Questions

More Articles